Radiographic film Interpretation of weld part 4
Автор: QC Explorers
Загружено: 2020-03-08
Просмотров: 2930
Описание:
Radiographic film Interpretation of weld part 4
please watch part 3
#weldingdefects #NDT #CSWIP
1 Excess penetration.
excess weld metal protruding through the root of fusion weld weld made from one side only. with pipe welding this type of imperfection may cause effect in the fluid flow that can cause erosion or corrosion problem.
2 Tungsten inclusion.
tungsten inclusion is the most occurring weld imperfection mainly caused by the absorption of tungsten fragments in weld puddle.
3 hi-low welding defect.
this is not a defect hi-low is a geometry condition caused by ovality or poor mechanical fit.
4 Weld spatter.
starter occurs when small particles from the weld attach themselves to the surrounding surface. its and especially common occurrence in gas metal arc welding no matter how hard you try it can't be completely eliminated.
film handling and processing defect
1 scratches.
2 fingerprint.
3 crimp marks.
4 light leak.
5 chemical stains.
6 roller mark.
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